Eliza put it perfectly: "Carers are not there to indulge themselves; it's work, and they should respect their clients' wishes."

That applies to music as it does to every other aspect of life.

Basically anyone who doesn't accept that isn't fit for purpose as a care worker, and should be shown the door. And any care agency that doesn't impress that on their employees isn't fit for purpose either, and should dispensed with.

There are good people out there who can do the job properly.